| 摘要 |
A wall mounted power switch retrofit, including, a switch that connects to the existing wires of the retrofitted wall mounted power switch and allows power to be provided to a load when turned on and prevents power from being provided to the load when turned off, a control unit that controls the status of the switch, a circuit that draws power from the existing wires and provides it to the control unit; and wherein the control unit receives electrical power regardless of the status of the switch.
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